{
  "annotation_id": "35a78fdb-cb29-4011-9238-f5c0a3b89662",
  "date_created": "2026-03-02T18:02:03.190000Z",
  "date_modified": "2026-03-02T18:02:03.190000Z",
  "file_hash": "eb0a85779d3a37e557784498c7b632c62d01b064c37e2a563f18f47ea410f5fa",
  "private": false,
  "record": {
    "abstract": "Most discussions of decoherence in the literature consider the\nhigh-temperature regime but it is also known that, in the presence of\ndissipation, decoherence can occur even at zero temperature. Whereas most\nprevious investigations all assumed initial decoupling of the quantum system\nand bath, we consider that the system and environment are entangled at all\ntimes. Here, we discuss decoherence for a free particle in an initial\nSchr\\\"{o}dinger cat state. Memory effects are incorporated by use of the single\nrelaxation time model (since the oft-used Ohmic model does not give physically\ncorrect results).",
    "arxiv_id": "quant-ph/0311019",
    "authors": [
      "G. W. Ford",
      "R. F. O\u0027Connell"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/5/6/010",
    "journal_ref": "J. Optics B 5,S349 (2003)",
    "title": "Decoherence at zero temperature",
    "url": "https://arxiv.org/abs/quant-ph/0311019"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "011cfac8-8890-4ef6-b77d-9f7b83606b09",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}